HP ProLiant SL250s Gen8 Server - Manual (Page 43)

Hardware options installation 43
• Each channel must have a valid online spare configuration.
• Each channel can have a different valid online spare configuration.
• Each populated channel must have a spare rank. A single dual-rank DIMM is not a valid configuration.
Lockstep Memory population guidelines
For Lockstep memory mode configurations, observe the following guidelines:
• Observe the general DIMM slot population guidelines (on page 42 ).
• DIMM configuration on all channels of a processor must be identical.
• In multi-processor configurations, each processor must have a valid Lockstep Memory configuration.
• In multi-processor configurations, each processor may have a different valid Lockstep Memory
configuration.
Population order
For memory configurations with a single processor or multiple processors, populate the DIMM sequentially in
alphabetical order (A through H).
After installing the DIMMs, use RBSU to configure Advanced ECC, online spare, or lockstep memory support.
Installing a DIMM
CAUTION: To avoid damage to the drives, memory, and other system components, the air
baffle, and drive blanks must be installed when the server is powered up.
1. Power down the server (on page 15 ).
2. Disconnect all peripheral cables from the server.
3. Remove the server from the chassis (on page 15 ).
4. Remove the front GPU cage (on page 16 ).
5. Remove the interposer board (on page 18 ).
6. Remove the front GPU bracket (on page 19 ).
7. Remove the processor air baffle (on page 21 ).
8. Open the DIMM slot latches.